/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package control;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import model.Student;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.AnnotationConfiguration;

/**
 *
 * @author Linda de Haan
 */
public class ViewStudentsController extends HttpServlet {

    private static SessionFactory sessionFactory;

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        HttpSession sessie = request.getSession(); // Get information from the session
        Student student = new Student();
        ArrayList<Student> students; //Create new arrayList 
        SessionFactory sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();
        Session session = sessionFactory.getCurrentSession(); //get the session from the sessionFactory
        Transaction transaction = session.beginTransaction(); //start the transaction

        if (sessie.getAttribute("gebruikers") != null) {
            students = (ArrayList) sessie.getAttribute("students");
            sessie.setAttribute("course", "course"); // moet nog aan gaan geven WELKE course het is 
            sessie.setAttribute("students", students);
//            sessie.setAttribute("studens.Name", students); // WELKE naam?
//            sessie.setAttribute("students.Email", students); // WELK emailadres?
        } else {
            sessie.setAttribute("noStudents", "There are no students in this course.");
        }
        transaction.commit();
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
